Pulley-block.



L. D. CULL.

PULLEY BLOCK.

APPLICATION FILED AUG. 10. 1914.

Patented Sept. 7, 1915.

2 SHEETSSHEET 1.

INVENTOR WITNESSES Y E N R O T T A COLUMBIA PLANOGRAPH c0.. WASHINGTON. 0. c4

L. D. CULL.

PULLEY BLOCK.

APPLICATION FILED AUG- 10, 1914.

l 52,608, Patented Sept. 7, 1915.

2 SHEETS-SHEET 2.

WITNESSES INVENTOR i; i r eraias rear rriioia LOUIS 1). cent, or CLEVELAND, onro, assrenon To THE FIRM or DAVID ROUND &

' SON, or CLEVELAND, OHIO, A PARTNERSHIP.

PULLEY-BLOCK.

riaaeee. I

ful Improvements in Pulley-Blocks, of

which the following is a specification.

My invention relates to improvements in pulley or hoist blocks, and more particularly to chain guides or guards for use in connection with such blocks for holding, separating, and maintaining the members of a hand or actuating chain in'proper relative position on the actuating Wheel as well as preventing such chain from running over or off of such wheel or of becoming caught or disarranged between the latter and said chain guides.

The primary object of the invention is to provide a generally improved chain guide or guard for the purposes above mentioned which will be exceedingly simple in construction, cheap of manufacture, and eflicient in use, and with these ends in view, I provide the chain guides with two separate depending chain receiving and separating members or guide loops at the lower portion of the actuating wheel, said guide members or loops terminating in and being divided by a chain separating bridge member adapted not only to keep the two members of the actuating chain separated from each other but also serving to detach the same from the groove of the wheel as against any clinging or sticking action of such chain members therein.

With the above mentioned and other objects in view, the invention consists in the novel construction, arrangement, and combination of parts hereinafter described, illustrated in one of its embodiments in the accompanying pointed out in the appended claims.

Referring to the drawings, of this specification, Figure 1, is an end elevation or edge view of a pulley or hoist block embodying my invention. Fig. 2, a front elevation of the same. Fig. 3 a bottom plan or under side view of the improved chain guide, the main portion of the block being broken away and the chain being re moved for the purpose of clearer illustration of the parts. Fig. 4, an enlarged central cross sectional view of the lower portions of the hand wheel and chain guide. Fig. 5, a

, Specification of Letters Patent. Application filed August 10, 1914.

drawings, and particularly forming a part link-receiving Patented Sept. v, iers. Serial N0. 855,936.

fragmentary top plan view of one'end'of the improved. chain guide illustrating a means of attaching the latter to a block.

Similar numerals of reference designate like parts throughout all the figures of the drawings. i v

The pulley or hoist block-1, may be of any suitable and convenient form or type and is provided with a hand or actuating wheel 2, around which the hand or actuating chain 3, passes in a well known and understood manner. I g i l The improved chain guide or guard comprises two oppositely disposed chain guides 4, provided with attaching stems 45 rigidly secured to the frame of the block at one side of the actuating wheel 2, in some suitable and convenient manner, as for example, by means of attaching bolts 4 These guides 4, are preferably located slightly above the central diameter of the actuating wheel 2, and operate to prevent the chain from leaving the wheel at the top or above the guides.

As a means of holding, separating and maintaining the members of the hand or actuating chain 3, in proper relative position on the actuating wheel, the chain guides are provided with separate depending chain receiving and separating members or guide loops 5, at the lower portion of the actuating wheel, said guide members or loops terminating in and beingdivided by a chainseparating bridge portion consisting, in the present instance, of a longitudinally extend ing spacing web 5 and transversely extend ing bridge or loop portions 5 it being obvious,however, that the parts 5, and 5 might be replaced by a single integral bridge portion or member occupying the space between the transversely extending bridge or web portions 5 i The transversely extending bridge portions 5*, not only serve to keep the two members of the actuating chain separated from each other, but also act to detach the same from the groove of the wheel as against any clinging'or sticking of the links in the pockets of the wheel groove, and the guide members 5, extend on opposites sides of and flare from the flanges of the wheel forming inwardly and downwardly curved outwardly flaring chain receiving and guiding members outof which it is not possible for the chain to escape and W F -W whichprevent possibility of the chain becoming .wedged or'disarranged between the parts.

1 From the' foregoing description, taken in connectionwith the. accompanying drawings, the operation and advantages. of my invention will be readily understood.

Having thus described one of the embodi- 'ments of my, invention, what I claim and desire to secure by Letters Patent, is,-

1; In a pulley block, the combination with a pulley or hoist block, and an actuating f flanged wheel and its chain; of two chain guides secured to said block in a stationary guide members terminating in and POSllilOD. at diametrically'opposite sides of said wheel and connected by a pair of depending lnwardly and downwardly curved "outwardly flaring guide members following the'contour of the flanges of said actuating wheel and flaring outwardly therefrom, said being separated and braced by depending transversely extending spacedbridge or loop por- Copies of this'patent maybe obtained for tions whereby the members of said actuating chain are held separate and apart from each other beneath the median portion of from each other beneath said actuating wheel.

In testimony whereof I have aflixed my signature in presence of two witnesses. LOUIS D. CULL.

- Witnesses:

W. G. HoLLnY, E. HANSON.

five cents each, by addressing the Commissioner of Patents, Washington, D. 0'. 

